WO1993009576A1 - Antenna device for radio apparatus - Google Patents
Antenna device for radio apparatus Download PDFInfo
- Publication number
- WO1993009576A1 WO1993009576A1 PCT/JP1992/000831 JP9200831W WO9309576A1 WO 1993009576 A1 WO1993009576 A1 WO 1993009576A1 JP 9200831 W JP9200831 W JP 9200831W WO 9309576 A1 WO9309576 A1 WO 9309576A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- band
- antenna
- radio
- conductor plate
- groove
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/273—Adaptation for carrying or wearing by persons or animals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
Definitions
- the present invention relates to a radio antenna device having an antenna body integrally formed with a band that can be worn on an arm or the like, and particularly to a difference in band size and a band fastener depending on a wearer.
- TECHNICAL FIELD The present invention relates to a radio antenna device capable of obtaining a stable antenna gain without being affected by the durability of the antenna.
- an antenna device for a wrist-mounted wireless device that can be carried while being worn on an arm is, for example, a device with a structure shown in Fig. 24.
- the arm-mounted radio 90 is composed of a case body 92 (radio main body) in which a circuit board for the radio is housed and a first band connected to both sides thereof.
- a wrist band 91 having a body 91a and a second band body 91b. Either of the first and second band bodies 91a, 91b is provided.
- strip-shaped first and second conductor plates 93 a and 93 are fixed inside the inside.
- the first conductive plate 93a and the second conductive plate 93b are both conductive on the case body 92 side to the radio circuit provided therein. While connected, on its free end side, it is also conductive to the metal middle fasteners 9 1 c and 91 d (band fasteners) of the first and second band bodies 91 a and 91 b. Contact Has continued. For this reason, as shown in FIG.
- the first and second conductor plates 93a and 93b are provided with a radio circuit 94 inside the case 92 and a middle fastener 91c, A loop is formed through 9 1 d to form an antenna body 95 that is a loop antenna having a winding.
- the radio circuit 9 has a high-frequency amplification circuit 94 b conductively connected to the first conductor plate 93 a via a coupling capacitor 94 a.
- a variable capacitance capacitor 94 (: is loaded between the capacitor and the ground potential. The side of the second conductor plate 93 b is fixed to the ground potential.
- the band size varies depending on the wearer, so the circumference of the loop changes, and the inductance value of the antenna changes.
- the gain is reduced. That is, since the tuning frequency of the antenna 95 is represented by the following equation, when the wearer changes the band size and the inductance (L) of the antenna 95 changes, the tuning frequency also shifts. This is because the antenna gain decreases.
- An object of the present invention is to realize a radio antenna device capable of obtaining a stable antenna gain without being affected by differences in band size depending on a wearer and durability of a band fastener.
- an antenna body including a band-shaped conductor ⁇ having a groove formed in a length direction with respect to a band that can be attached to an arm or the like. Is provided.
- the basic structure of the case body 11 is connected to an arm mounting band 12 and the arm mounting band 12 is provided with a groove 1 in the longitudinal direction.
- a conductive plate 13 made of a belt-shaped stainless plate on which 3a is formed is fixed.
- the conductor plate 13 itself constitutes the antenna body 14 which functions as a slot antenna by itself.
- the antenna body 14 can of course be mounted on the arm via the arm mounting band 12, regardless of the band size of the wearer.
- the circumference of the groove 13 a is In a state defined by its own size and shape You.
- the inductance value of the antenna body 14 does not change between the state of wearing on the arm and the state of not wearing the arm, and even when the thickness of the wearer's arm is different, and the high antenna The gain can be maintained.
- the groove 13 a formed in the conductive plate 13 that is sufficiently large for the wavelength is formed around the outer circumference of the band body 12 for the arm.
- the omnidirectionality of the antenna body 14 is improved because it is open toward the c.
- the groove 13 by providing the feeder circuit 15 for the conductor plate 13, the groove 13 If the structure is such that an electric field E can be generated in a, electromagnetic waves can be radiated from the groove 13a.
- the antenna body 14 is sensitive to a magnetic field component directed in the plane direction of the wristband 12.
- the electric field component is weakened by the human body, but the magnetic field component is enhanced in the opposite way. Therefore, a magnetic field detection type antenna is used as a wireless device antenna device. Is effective. In other words, it has high sensitivity when worn on the human body, which is a necessary condition for an arm-worn type (human body wearing effect).
- an optional band fastener will be provided as necessary so that it can be worn on an arm or the like.
- the band when the band is composed of the first band body and the second band body connected to both sides of the case body, at least one of the first and second band bodies is provided.
- An antenna body including a band-shaped conductor plate having a groove formed in the length direction is provided for the band body.
- a groove is formed in the length direction from the edge of the case body side for each of these band bodies.
- the formed first and second conductive plates are fixed, and these conductive plates are used to fix the first and second conductive plates.
- One antenna body may be configured.
- the antenna body is configured such that the ends on one side and the ends on the other side are electrically connected via two electric paths formed on the case body side.
- the radio antenna device having such a configuration, for example, when a circuit pattern of a radio device circuit board disposed inside the case body is covered in an electric path, the electric circuit extends along the inner periphery of the case body.
- the formed wiring part may be included.
- the conductor plate side and the io circuit pattern side or the wiring section side may be directly electrically connected, but these are connected to the case body side or the conductive ee> body rr * plate
- the provided conductive ends may be electrically connected to each other.
- the antenna body is loaded on both sides of the groove in the conductor plate.
- a power supply point is set from the side of the circuit board for radio equipment to which either one of a positive potential and a negative potential is supplied to one of the two sides of the groove with respect to the conductor.
- an unbalanced power supply type may be set on the other side by setting a power supply point at which the ground potential is set. Or lead
- a feeding point from the circuit board for radio equipment may be provided for the Z 0 conductor so that one side and the other side of the groove are set as a balanced circuit.
- the feed point may be set at a position shifted to any end side from the center position in the length direction of the conductor plate, and the impedance of the antenna body may be adjusted. Furthermore, a dielectric is filled between the grooves of the conductive plate so that the antenna body can be tuned to the same wavelength as that of the case where the length of the antenna body is not actually extended. It is preferable to keep it. In other words, when a dielectric is filled inside the elongated groove formed in the conductor plate,
- the wavelength of the electromagnetic wave propagating inside the dielectric material is shortened, and apparently the same effect as when the length of the antenna body is increased is obtained. Therefore, even when the length of the groove is short, a high antenna gain can be obtained for a long-wavelength electromagnetic wave.
- the groove is formed with a widened portion that extends the perimeter of the groove so that it can cope with long-wavelength electromagnetic waves while maintaining the same band length.
- the metal fastener is used. Is preferably separated from the conductor plate. In this case, depending on the thickness of the wearer's arm, etc.
- FIG. 1 shows an antenna of a wrist-mounted radio device according to a first embodiment of the present invention.
- FIG. 3 is an explanatory view showing the structure of the entire body.
- FIG. 2 is a schematic perspective view showing an external appearance of the wrist-mounted radio equipped with the antenna body shown in FIG. 1 at the time of use.
- FIG. 3 is a configuration diagram of a wrist-mounted wireless device including the antenna body shown in FIG.
- FIG. 4 is an explanatory diagram showing a state where power is supplied to the antenna body shown in FIG.
- FIG. 5 is an explanatory diagram showing a structure of an antenna body of a wrist-mounted wireless device according to a modification of the first embodiment of the present invention.
- FIG. 6 is a graph for explaining directivity in the first embodiment of the present invention and its modification.
- FIG. 7 is a cross-sectional view of a wrist-mounted radio device according to a second embodiment of the present invention.
- FIG. 8 is a longitudinal sectional view of the wrist-mounted radio shown in FIG. 7.
- FIG. 9 is a vertical cross-sectional view of the inside of the case body of the wrist-mounted wireless device shown in FIG.
- FIG. 10 is an explanatory diagram for explaining the directivity of the antenna body when the wrist-worn wireless device shown in FIG. 7 is worn on a wrist.
- FIG. 11 (a) is a cross-sectional view of a wrist-mounted radio according to a modification of the second embodiment of the present invention
- FIG. 11 (b) is a longitudinal cross-sectional view thereof.
- FIG. 12 is a cross-sectional view showing a configuration around a case body of a wrist-mounted wireless device according to a third embodiment of the present invention.
- FIG. 13 is a longitudinal sectional view showing a configuration around a case body of the wrist-worn radio device shown in FIG.
- FIG. 14 is a cross-sectional view showing a configuration around a case body of an arm-mounted radio device according to a fourth embodiment of the present invention.
- FIG. 15 is a longitudinal sectional view showing a configuration around a case body of the wrist-mounted radio shown in FIG.
- FIG. 16 is an exploded perspective view of the arm-mounted radio device according to the fifth embodiment of the present invention, as viewed from the rear surface side around the case body.
- Fig. 17 (a) is a cross-sectional view of the wrist-mounted radio shown in Fig. 16, and Fig. 17 (b) is a longitudinal cross-sectional view.
- FIG. 18 is a graph showing the directivity in the horizontal plane direction of the wrist-mounted wireless device in a state where the arm on which the wrist-mounted wireless device shown in FIG. 1S is mounted is hung down.
- the first 9 figure shows ⁇ property that put the horizontal plane of the arm mounting type radio apparatus in a state in which the arm mounting type radios bent horizontally in towards precordial arms mounted as shown in the first 6 Figure FIG.
- FIG. 20 is a configuration diagram of an antenna body of the wrist-mounted wireless device according to the sixth embodiment of the present invention.
- FIG. 21 is a configuration diagram of an antenna body of the wrist-mounted wireless device according to the seventh embodiment of the present invention.
- FIG. 22 (a) is a cross-sectional view showing a configuration of an antenna body of a wrist-mounted radio device according to an eighth embodiment of the present invention
- FIG. 22 (b) is a longitudinal sectional view thereof.
- FIG. 23 is a configuration diagram of an antenna body of a wrist-mounted radio device according to a ninth embodiment of the present invention.
- FIG. 24 is a configuration diagram of an antenna body of a conventional wrist-mounted wireless device.
- FIG. 25 is an equivalent circuit diagram of the wrist-mounted radio shown in FIG. 5 BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described with reference to the drawings.
- FIG. 1 is an explanatory view showing a structure of an antenna body (conductor plate) of an arm-mounted radio device (antenna device for an arm-mounted radio device) according to Embodiment 1 of the present invention
- FIG. FIG. 4 is a schematic perspective view showing an appearance when using a wrist-mounted wireless device including the above.
- the wrist-mounted wireless device 10 of the present example has a case body 11 (wireless device main body) in which a wireless circuit board is housed, and a first band connected to the side thereof.
- an arm-attaching band 12 composed of a body 12a and a second band body 12b.
- first and second band bodies 12a, 12 b, the metal middle fastener 1 2 1 (band fastener) is attached to the end of the first band body 1 2 a, while the second band body 1 2 b
- a plurality of stop holes 122 are formed on the side to which the middle fasteners 122 can be mechanically connected.
- a strip-shaped conductor plate 13 having a groove 13a having a width in the length direction is formed inside the first band body 12a.
- the antenna body 14 is constituted by the conductor plate 13.
- a high-frequency amplification in which a positive potential is supplied to one of the conductor portions 130 a on both sides of the groove 13 a is supplied.
- a first power supply point 131 from the side of the circuit section 17 (power supply circuit, radio circuit board) is provided, while the other conductor section 130b is grounded there.
- a second feed point 1 32 to be set to the ground potential is set, and the structure is an unbalanced feed.
- the conductor 13 0 a on one side of the conductor plate 13 and the other Capacitive element 19 loaded between conductor section 130b the tuning frequency defined by the inductance value and the capacitance value of the conductor plate 13 can be adjusted by the capacitance value of the capacitance element 19.
- the wrist-worn radio 10 can be carried while being worn on the wrist via the wrist-band 12 and can be used as a transmitter or a receiver compatible with microwaves of a predetermined frequency, etc. It has a structure.
- the wrist-mounted radio 10 having such a configuration includes a middle fastener 1 2 1 on the side of the first band body 12 a and a side of the second band body 12 b on the side of the second band body 12 b. It is used in a state where it is engaged with the retaining holes 1 2 2 of the arm and is attached to the arm.
- the antenna body 14 is composed of the conductor plate 13 having the length L and a groove 13 a narrower than the wavelength used, the antenna body 14 has the groove 1 3a is configured as a slot antenna that opens toward the outer peripheral side of the wrist band 12.
- the perimeter of the groove 13 a does not change.
- the tuning frequency of 4 does not shift, and the antenna gain can be maintained at a high level regardless of the wearer.
- the groove 13a is open over a wide angle range in the horizontal plane. It is suitable for portable use because it makes the directional characteristics in the horizontal direction in the direction slot antenna, ie, non-directional.
- the arm-mounted wireless device 10 has an antenna structure suitable as an arm-mounted wireless device.
- the antenna gain can be changed even if the surface condition changes due to spears or the like, or even if deformation occurs. Is stable without change.
- the antenna body 24 is protected from the effects of static electricity and the like, so that damage and malfunction of the arm-mounted radio 10 can be prevented.
- FIG. 5 shows an antenna body 1 having a configuration in which the width of the groove 13 a of the conductor plate 13 is further extended to the width d 2 with respect to the antenna body 14 shown in FIG. 4a is shown.
- the antenna body according to the first embodiment shown in FIGS. 1 and 3 has the same configuration as the antenna body 14a according to the modification of the first embodiment shown in FIG. Therefore, in FIG. 5, corresponding portions are denoted by the same reference numerals.
- the width of the groove 13 b of the conductor plate 13 is Since the antenna body 14a is relatively wide, the antenna body 14a is in a state where the conductor plate 13 constitutes a loop antenna formed in a loop around the groove 13b.
- the directional characteristics of the antenna body 14a in the plane direction of the conductor plate 13 are the same as those of the slot antenna indicated by the solid line 1Q1 in FIG.
- the figure-shaped directional characteristic tends to shift to the fundamental directional characteristic of the loop antenna shown by the solid line 102. Therefore, in the first embodiment and its modified example, by changing the width of the grooves 13a and 13b of the antenna body 14> 14a, its directional characteristics can be changed to the directional characteristics of the slot antenna and the loop. It can also be set between the directional characteristics of the antenna.
- a structure similar to the conductive plate 13 may be further provided on the second band body 12 side.
- the capacitance element 19 for antenna tuning may be a fixed capacitance capacitor, but a variable capacitance capacitor is used to arbitrarily change the tuning frequency of the antennas 14 and 14a. The configuration may be changed.
- the wrist-mounted band 12 is composed of the first and second band members 12 a and 12 b.
- the mounting band 12 is composed of one band body, and one end of the band body is fixed to the side of the case body 11, while the other end (free end side) is the case body.
- the wrist-mounted wireless device may be configured to be detachable from the side of 11.
- FIG. 7 is a cross-sectional view of an arm-mounted radio device (an antenna device for an arm-mounted radio device) according to a second embodiment of the present invention
- FIG. 8 is a longitudinal cross-sectional view thereof.
- the wrist-mounted radio 20 of this example has a case 21 (radio main body) in which a radio circuit block 26 is housed, and leather and silicon connected to its side.
- Conformer formed body — 1 9 An arm-attaching band 22 having a first band member 22 a and a second band member 22 b formed of a monolithic body or the like, and the first band member 2 Inside the 2a and the second band body 22b, a conductive plate 23 arranged across the inside of the case body 21 is physically formed and fixed.
- the conductor plate 23 has a groove 23a formed in the longitudinal direction thereof.
- the conductor plate 23 having the groove 23a forms the antenna body 24 of the arm-mounted radio 20. It is configured.
- the conductive plate 23 is formed of a first band member 22a and a first band member such as a sewn sheet-like insulative molded body or a bonded sheet-like insulative molded body. And the second band body 22b.
- the conductive plate 23 is a thin plate that can be bent when the arm mounting band 22 is attached to the arm, and the material of the conductive plate 23 is to reduce the loss of the antenna 24. A material having a high conductivity is used.
- the conductor plate 23 is formed inside the arm mounting band 22 and the surface thereof is completely covered, so that the conductor plate 23 becomes a structure that is hard to be slid. Therefore, a conductor having high conductivity such as copper or silver can be used for the conductor plate 23. As shown in FIG.
- the conductive plate 23 is disposed inside the case body 21 so as to pass through the lower surface side of the radio circuit block 26.
- a metal fastener 2 2 1 made of metal 0 is attached to an end of the second band body 2 2 a, and a middle fastener 2 2 1 is provided on the side of the first band body 2 2 b.
- a plurality of stop holes 2 2 2 are formed so that 1 can be mechanically connected. For this reason, the wrist-mounted radio 20 can be mounted on the wrist via the wrist-mounted band 22, but the middle fastener 2 2 1 has a structure that is completely separated from the conductive plate 23. Therefore, the conductor 23 does not form a loop-shaped electric path even if the middle fastener 2 2 1 and the stop hole 2 2 2 are engaged. No.
- a circuit case 266 is provided inside the case board 21 for radio equipment.
- a variable capacitor 2 69 for adjusting the antenna tuning frequency
- a radio circuit block 26 is provided on the upper side of the radio circuit board 2 5 6 7, there is provided a variable capacitor 2 69 for adjusting the antenna tuning frequency, while on the lower side, a radio circuit block 26 is provided. It has a battery 264 serving as a power supply unit for it.
- a conductor plate 23 is disposed on the back cover 29 via an insulating plate 268, and the conductor plate 23 and the radio circuit board 2 6 7 and ⁇ are wired and connected by conductive terminals 2 63.
- the conductive plate 2 By shifting the connection position between the conductive terminal 26 3 and the conductive plate 23 to the side of the first band member 22 a or the side of the second band member 22 b, the conductive plate 2 The impedance between the side 3 and the circuit block 26 for the radio can be adjusted. Also, the variable capacitor 269 is wired and connected to a structure loaded on both sides of the groove 23a of the conductor plate 23, similarly to the wireless device according to the first embodiment. . Further, a radio-frequency amplifying section 11 (not shown) formed on a radio circuit board 26 7 of the radio section block 26 is provided with a groove 23 a formed in the conductor plate 23.
- a timing path and a display path for displaying the timing information are provided, while a liquid crystal display panel or the like is provided on the upper surface side of the case body 21.
- the clock function is provided to the wrist-worn radio device 20.
- the arm-mounted radio 20 having such a configuration is also the arm-mounted radio according to the first embodiment. Like the wearable radio, it can be used as a transmitter or a receiver when worn on the wrist, and even when the wrist-worn radio 20 is worn on the wrist, the antenna body 24 remains Since the conductor plates 23 do not overlap each other in the state shown in Fig. 10, even if the locking position of the 5 middle fastener 2 21 with respect to the stop hole 2 22 is changed, the tuning frequency is not changed. There is no shift. Also, in the wrist-mounted radio 20 of this example, since the groove 23 a is formed over substantially the entire length of the conductor plate 23 in the longitudinal direction, the groove 23 a is formed by the wrist band 2. It is open to almost the whole in the outer peripheral direction of 2. For this reason, drop the arm with the arm-mounted radio 10
- the groove 23a In the lower position, the groove 23a is open in any direction of the horizontal plane, so its directional characteristics are almost omnidirectional and there is no null point, so it is portable. Are suitable. Also, since it functions as a magnetic field detection type, it has high sensitivity when worn on the human body.
- Fig. 11 (a) is a cross-sectional view of a wrist-mounted radio (antenna device for wrist-mounted radio) according to a modification of the second embodiment of the present invention
- Fig. 11 (b) Is a longitudinal sectional view thereof.
- the wrist-mounted wireless device of this example has substantially the same configuration as the wrist-mounted wireless device according to the second embodiment shown in FIGS. 7 and 8, and the corresponding parts are the same.
- the code is attached.
- the wrist-mounted radio 20a of the present example is composed of a case 21 (radio main body) in which a radio circuit block 26 is disposed and a leather connected to its side.
- a wrist band 22 made of a first band body 22a made of a silicone resin formed body and a second resin body 22b.
- the first band body 2 2 A conductor plate 23 formed with a groove 23a in the longitudinal direction is physically fixed to 1a, and the antenna of the arm-mounted radio 20 is fixed by the conductor plate 23.
- the body 24a is composed.
- one end of the conductive plate 23 is located between the circuit block 26 for radio equipment and the back cover 29 in the area C of the case body 21.
- the conductor plate 23 and the radio circuit block 26 are connected by wiring between them.
- the radio circuit block 26 has a variable capacitance capacitor (not shown) for adjusting the antenna tuning frequency, and the variable capacitance capacitor has a groove 23 a with respect to the conductor plate 23. Loaded on both sides.
- the metal middle fastener 2 2 1 is attached to the end of the second band body 2 2 a, while the middle fastener 2 2 1 is attached to the side of the first band body 2 2.
- a plurality of mechanically connectable stop holes 222 are formed so that the wrist-worn wireless device 20a can be mounted on the wrist via the wrist-worn band 22.
- the wrist-mounted wireless device 20a having such a configuration can be used while being worn on the wrist, and has the same effects as the wrist-mounted wireless device according to the second embodiment.
- the length of the conductor plate 23 is short, the antenna gain is lower than that of the wrist-mounted wireless device of the second embodiment, so there is a restriction on the range of use, but the number of parts is small. Since the configuration is simple, it is cost-effective and highly reliable.
- FIG. 12 is a cross-sectional view showing a configuration around a case body of an arm-mounted radio device (an antenna device for an arm-mounted radio device) according to a third embodiment of the present invention, and FIG. It is.
- the second implementation was performed for a part such as a wrist-worn band (not shown). It is the same as the wrist-mounted wireless device according to the example.
- the wrist-mounted radio 30 of this example has a case body 31 (a radio main body) in which a radio circuit block 36 is disposed, and a resin body connected to its side.
- a first band body 32a formed of a molded body or the like and an arm mounting band formed of a second band body 32, and the first band body 32a and the second band body
- the first conductive plate 331 and the second conductive plate 332 are integrally formed and fixed to the band body 32b.
- Grooves 33a and 33b are formed on both sides of the first conductor plate 3311 and the second conductor plate 3332 in the longitudinal direction.
- the first conductive plate 331, having 3a, 33b, and the second conductive plate 33, constitute an antenna body 34 of the arm-mounted radio 30.
- the grooves 3 3a and 3 3b extend from the edges of the first conductive plate 3 3 1 and the second conductive plate 3 3 2 on the side of the case body 3 1 to the first conductive plate 3 3
- the grooves 33a and 33b are open ends.
- the side of the first conductive plate 331 is separated into one end portion 331a and the other end portion 331b by the grooves 33a and 33b, and the second conductive plate 3311b is separated by the grooves 33a and 33b.
- the side of the body plate 3332 is separated into one end 332a and the other end 3332b.
- the one end 33 1 a of the first conductor plate 33 1 and the one end 33 2 a of the second conductor plate 33 2 are wired inside the case body 31.
- the other end 3 31 b of the first conductive plate 3 3 1 and the other end 3 3 2 b of the second conductive plate 3 32 are 1 is connected to the wiring inside.
- the case body 31 has two conductive terminals 32 la, 32 1 b, 32 1 c, and 32 1 d formed on the rain side surface thereof.
- the end 3 32 a and the other end 3 32 b are conductively connected by soldering or the like.
- the conductive terminal 3 2 1 a and the conductive terminal 3 2 1 c are conductively connected to each other via the one-side road pattern 3 6 7 a of the radio circuit board 3 6 7 of the radio circuit block 36.
- the conductive terminal 3 2 1 b and the conductive terminal 3 2 1 d are conductively connected via the other-side circuit pattern 367 b of the radio circuit board 367. Also, as shown in FIG. 13, the conductive terminals 3 2 1a, 3 2 1b, 3
- a variable capacitance capacitor 369 for adjusting the antenna tuning frequency is mounted between the one side road pattern 366 a and the other circuit pattern 366 b, and the radio circuit board 366 is provided.
- the battery 3 6 4 is located on the lower side of the
- the arm-mounted radio 30 having such a configuration also has the following effects in addition to the effects obtained in the arm-mounted radio according to the second embodiment. That is, the first conductor plate 331 and the second conductor plate
- Each of 3 3 2 is formed on the first band body 3 2 a or the second band body 32 side, and the case body 31 side is connected to the conductive terminals 3 2 1 a, Conductive connection is made via 3 2 1, 3 2 1 c, 3 2 1 d, and the case body 3 1 side and the arm mounting band side are separate bodies. Therefore, if only the side of the wristband is damaged before using the wristband radio 30, replace the wristband from the case body 31 and replace it. It is also easy. Further, since the arm-mounted wireless device 30 can be manufactured for each member, the effect of high productivity is also achieved.
- FIG. 14 is a cross-sectional view showing a configuration around a case body of an arm-mounted radio device (an antenna device for an arm-mounted radio device) according to a fourth embodiment of the present invention.
- FIG. 10 is a longitudinal sectional view of FIG. Note that the arm-mounted wireless device of the present example is configured in the same way as the arm-mounted wireless device according to the second embodiment with respect to parts such as an arm-mounted band (not shown).
- the wrist-mounted radio 40 of this example has a case body 41 (radio main body) in which a radio circuit block 46 is arranged, and a leather connected to its side. And the like, and a first band body 42a and a second band body 42b and an arm-attaching band composed of the second band body 42b and the first band body 42a and the second band body.
- Body 4 2b has the first conductive plate
- first conductive plate 43 1 and the second conductive plate 43 1 are integrally formed and fixed. Further, the first conductive plate 43 1 and the second conductive plate 43 1
- the antenna body 44 of the arm-mounted wireless device 40 is constituted by 43 1 and the second conductive plate 4 32.
- the grooves 43a and 43b are the first conductive plate on the case body 41 side.
- the first and second conductive plates 4 32 are formed in the longitudinal direction, and the first conductive plate 4 3 1 and the second conductive plate 4 3 2 have an end on the case body 4 1 side.
- the grooves 4 3 a> 4 3 b are open ends.
- the side of the first conductive plate 431 is separated into one inverted end 431a and the other end 431b, and the side of the second conductive plate 432 is also on one side.
- the end 4 32 a and the other end 4 32 b are separated.
- One end 431a of the first conductor plate 431 and one end 432a of the second conductor plate 432 are wired inside the case body 41. In the connected state, the other end 4 31 b of the first conductor ⁇ 4 3 1 and the second
- the other end 4 32 b of the I 0 conductive plate 4 32 is connected to the wiring inside the case 41. That is, one end 4 3 1 a of the first conductive plate 4 3 1, the other end 4 3 1, the other end 4 3 2 a of the second conductive plate 4 3 2 and the other The side ends 4 32 b are fixed to the conductive terminals 4 21 a, 42 1, 42 1 c and 42 1 d, respectively, while the inside ends of the case body 41 Two wiring portions 41a and 1b are formed on the peripheral surface. Of these wiring portions 4 la and 4 1 b, conductive terminals 4 2 1 a and 4 2 1 c are conductively connected to wiring portion 4 1 a, and conductive terminals 4 2 a are connected to wiring portion 4 1 b. 1 b and 4 2 1 d are conductively connected. Where conductive terminals 4 2 1 a, 4 2 1 b, 4 2 1 c, 4 2 1 d
- Wiring part 4 1 a, 4 1 b that is conductively connected to Z 0 4 1 1 a, 11 b, 4 11 c, 4 11 d are all terminals formed on case body 4 1 It is located at the position corresponding to the formation position of the inlet holes 4 12 a, 4 12, 4 12 c and 12 d. For this reason, the conductive terminals 4 2 1 a, 4 2 1, 4 2 lc, 4 2 1 d are connected to the terminal insertion holes 4 1 2 a, 4 1 2, 1 2 c, 4 1 d from outside the case body 4 1.
- a circuit block 46 having a variable capacitance capacitor 469 for adjusting the antenna tuning frequency is disposed inside the case body 41, and the variable capacitance capacitor 469 has a spring characteristic. Are electrically connected to the wiring sections 4 la and 41 b via the conductive terminals 46 a and 46 b.
- the arm-mounted wireless device 40 having such a configuration also has the same effect as the third embodiment. That is, first.
- the conductive terminals 4 2 1 a, 4 2 1, 4 2 1 c, 4 2 1 d fixed to the conductive plate 4 3 1 and the second conductive plate 4 3 2 If only the side of the wristband is damaged before using the wrist-worn radio 40, the wristband side will be attached to the case 4 It is easy to remove from one and replace it. In addition, since each member can be manufactured, there is an effect that the production is easy. Further, wiring portions 41 a and 1 b for conductively connecting the first conductive plate 43 1 and the second conductive plate 43 2 are formed on the inner peripheral surface of the case body 41.
- the case 41 is heightened when these wiring parts 4 la and 41 b are connected to the circuit block 46 for radio equipment because they are formed on the inner peripheral surface on the side surface side. No need. Therefore, the thickness of the wrist-mounted wireless device 40 can be reduced to improve its portability. In addition, the height of the case body 41 can be kept as it is, and a component for imparting a clock function can be provided in the thickness direction of the case body 41. I3 ⁇ 4 3;
- FIG. 16 is an exploded perspective view of a wrist-mounted radio device (an antenna device for a wrist-mounted radio device) according to a fifth embodiment of the present invention, as viewed from the rear side.
- FIG. 17 (a) is a transverse sectional view
- FIG. 17 (b) is a longitudinal sectional view.
- the wrist-mounted wireless device 50 of the present example has a case body 51 (a wireless device body) in which a wireless circuit block 56 is disposed, and a leather connected to a side thereof. And a wrist band 52 composed of a first band body 52a and a second t0 band body 52b. These first band body 52a and second band body
- the first conductive plate 531 and the second conductive plate 532 are integrally formed and fixed to 52b, respectively.
- grooves 53 a and 53 b are formed in the length direction on both sides of the first conductive plate 53 1 and the second conductive plate 53 2.
- the first conductor plate 531 and the second conductor plate 532 having a and 53b constitute an antenna body 54 of the arm-mounted radio 50.
- the width of the first conductive plate 531 and the second conductive plate 532 is changed by the length quotient, and the widest possible width is secured in each part, and the antenna Designed to reduce resistance O
- the grooves 5 3 a and 5 3 b are connected to the first conductor plate 5 3 1 from the ends of the first conductor plate 5 3 1 and the second conductor plate 5 3 2 on the side of the case body 5 1.
- 3 1 and the second conductive plate 5 32 are formed in the longitudinal direction, and the first conductive plate 5 3 1 and the second conductive plate 5 3 2 ,
- the grooves 53a and 53b are open ends. For this reason..
- the first conductive plate 5 3 1 is formed on one end 5 by grooves 5 3 a and 5 3 b.
- the second conductive plate 532 is also separated into one end 532a and the other end 5332b.
- the one end 531a of the first conductive plate 531 and the one end 532a of the second conductive plate 532 are connected via the case body 51 side.
- the other end 5 3 1 b of the first conductive plate 5 3 1 and the other end 5 3 2 b of the second conductive plate 5 3 2 are connected to the case 5 1.
- One end 5 3 1 a, 5 3 2 a and the other end 5 3 1 b> 5 3 2 b of body plate 5 3 1 and second conductive plate 5 3 2 are connected to conductive terminals 5 2 1a, 5 2 1b, 5 2 1c, 5 2 1d are fixed by spot welding to conductive terminals 5 2 1a, 5 2 1b, 5 2 1c, 5 2 I d.
- the distal side is the protrusion 5 of the first band body 52a and the second band body 52b.
- the radio circuit board 56 6 of the radio circuit block 56 has a terminal piece 5 6 8 a at the end of the one-side circuit pattern 5 6 7 a.
- > 568 b is fixed with solder or the like, and terminal pieces 568 c and ⁇ d are fixed to the other end of the circuit pattern 567 b with solder or the like.
- each of the terminal pieces 568a, 5668b, 5668c, and 5668d is bent at a plurality of locations to have a spring property, and the arrangement position is the case body 56 Of the terminal insertion holes 512a, 512b ; 512c, 512d.
- the projections 5 2 2 a> 5 2 5 2 b, 5 2 2 c, 5 2 2 d of the first band 5 2 a and the second band 5 2 b are connected to the case 5.
- the conductive terminals 5 2 1 a 5 2 1 b, 5 2 1 c, 5 2 1 d and terminal strips 5 6 8 a, 5 6 8 b, 568 c, 568 d come into conductive contact with one end 531 a of the first conductive plate 531 and one end of the second conductive plate 532
- the other end 5 3 1 b of the first conductive plate 5 3 1 b and the other end 5 3 2 b of the second conductive plate 5 3 2 2b is in a wired connection state.
- the first band member 52a and the second band member 52b are fixed to the side surface of the case member 51 by a detachable fixing mechanism.
- the terminal insertion holes 5 12a, 512b, 512c, and 512d are the first band body 52a and the second band body.
- the projection of 52 b is sealed by 52 a, 52 b, 52 c and 52 dL, and a back lid 59 is attached on the back side to ensure its waterproofness.
- the fixing mechanism between the first band member 52a and the second band member 5.2b and the case member 51 is, for example, a well-known mechanism employed for fixing a band such as a wristwatch to a watch body. And the like can also be adopted.
- a variable capacitor 569 for adjusting the antenna tuning frequency is provided between the one-side circuit pattern 567a and the other-side road pattern 567b.
- the variable capacitance capacitor 569 is mounted on both sides of the groove 53 a with respect to the antenna body 54 in terms of electric circuit.
- the wrist-mounted radio 50 of this example is provided with a liquid crystal display panel (not shown) on the front side of the case so that it can be used as a clock, while the circuit block 5 S Is also provided with a timing path, a display panel drive picture path (not shown) for displaying it, and the like.
- the antenna body 54 continues to have its first conductor plate 53 1 and second conductor plate 53 Since the two do not overlap each other, the peripheral length of the groove 53a is constant 5 irrespective of the band size of the arm mounting band 52. Therefore, since the tuning frequency does not shift, the antenna gain can be maintained at a high level regardless of the wearer. Also, when the arm with the arm-mounted radio 50 mounted thereon is hung down, the grooves 53a and 53b are open in almost all directions of the horizontal plane. Is the receiving sensitivity for vertical polarization of about 284 MHz.
- FIG. 10 is omnidirectional, as shown by the solid line A in FIG. 18 showing the measurement results.
- Fig. 18 shows the characteristics when the arm-mounted radio 50 is installed alone so that it has the same posture as when the arm with the arm-mounted radio 50 is hung down. Are indicated by dotted lines B and.
- the arm-mounted wireless device 50 of this example is of a magnetic field detection type, so that the sensitivity is improved by being worn on a human body.
- the frequency is about Even when the sensitivity to 284 MHz vertical polarization was measured, there was no significant change in its directivity or antenna gain, and it was confirmed that high sensitivity and omnidirectional antenna characteristics were maintained. ing.
- the arm with the arm-mounted radio 50 is placed horizontally in front of the wearer's left chest and in this state,
- the first conductor plate 531 and the second conductor The plate 5 3 2 is conductively connected to the case 5 1 via conductive terminals 5 2 1 a, 5 2 1 b, 5 2 1 c, 5 2 1 d, and is connected to the case 5 1. It is separate from the side of the wristband 52. Due to this time t 0, if the wristband 52 is damaged while using the wristwatch 50, remove the wristband 52 from the case body 51. , It is easy to replace. In addition, since each member can be manufactured, there is an effect that the production is easy.
- FIG. 20 is a configuration diagram of an antenna body in an arm-mounted radio device (an antenna device for an arm-mounted radio device) according to a sixth embodiment of the present invention.
- the configuration of the wrist-mounted wireless device of this example is the same as the configuration of the wrist-mounted type according to the first to fifth embodiments, and only the power supply structure for the conductor plate is different. Only the structure will be described.
- FIG. 21 is a configuration diagram of an antenna body in an arm-mounted radio device (antenna device for an arm-mounted radio device) according to a seventh embodiment of the present invention.
- the configuration of the wrist-mounted wireless device of this example is the same as the configuration of the wrist-mounted type according to the first to fifth embodiments, and only the power supply structure for the conductor plate is different. Only the structure will be described.
- the feeding points 74a and 74b have lengths according to the impedance value of the conductor plate 73.
- the distance of X is shifted from the middle position in the direction to the end side. Therefore, the impedance between the antenna body 74 and the radio circuit can be adjusted without changing the structure of the conductor plate 73 or the configuration of the radio circuit.
- FIG. 22 (a) is a cross-sectional view showing the configuration of an antenna body in an arm-mounted radio device (an antenna device for an arm-mounted radio device) according to an eighth embodiment of the present invention, and FIG. 22 (b). Is a longitudinal sectional view thereof.
- the configuration of the arm-mounted radio device of this example is the same as the configuration of the arm-mounted radio device according to the first to fifth embodiments, and only the configuration inside the groove of the conductor plate is different. Only the configuration will be described.
- a groove 83a is formed in the length direction of the conductive plate 83, and a silicide is formed inside the groove 83a.
- a dielectric layer 85 such as a condenser ceramic is filled, and an outer peripheral side thereof is covered with a conductive band body 82.
- the electromagnetic wave propagating inside the dielectric layer 85 of the antenna body 84 is The wavelength is represented by the following equation.
- the wavelength of the electromagnetic wave propagating inside the dielectric layer 85 is reduced as the dielectric constant of the dielectric layer 85 itself increases, and apparently, the groove 8 3 a of the conductive plate 8 3 (antenna body 8 4) The effect is the same as when the perimeter of is increased. For this reason, a high antenna gain can be obtained with respect to long-wavelength electromagnetic waves while the peripheral length of the groove 83a is kept short. Conversely, the length of the antenna 84 that can be tuned to electromagnetic waves of the same wavelength can be shortened. Note that the structure may be such that the dielectric layer 85 is not only filled in the groove 83 a but also covers the entire conductive plate 83.
- FIG. 23 is a configuration diagram of an antenna body in an arm-mounted radio device (an antenna device for an arm-mounted radio device) according to a ninth embodiment of the present invention.
- the configuration of the wrist-mounted wireless device of this example is the same as the configuration of the wrist-mounted type according to the first to fifth embodiments, and only the shape of the groove formed on the conductor plate is different. Only the structure will be described.
- a groove 93a is formed in the length direction of the conductor ⁇ 93.
- Extended portions 931a and 931b are formed at both ends and at an intermediate position where the width of the groove 93a is extended. For this reason, the circumference of the groove 93 a of the antenna body 9 is substantially extended, so that the antenna body 9 can be exposed to long-wavelength electromagnetic waves without extending the length of the antenna body 9. On the other hand, a high antenna gain can be obtained.
- the groove formed in the conductor plate has a structure that linearly extends in the length direction of the conductor plate. May be secured for a long time. Also for arm mounting
- the configuration of the five-band is not limited to the whole, but is not limited to a metal arm-attachment band to which a conductive plate is fixed via an insulator. Further, the respective constituent elements of the wrist-mounted wireless devices of the above-described first to ninth embodiments may be combined.
- an antenna body is formed by a rectangular conductive plate having a groove formed in a longitudinal direction with respect to a band that can be mounted on an arm or the like. It has features. Therefore, according to the present invention, the conductor plate provided with the groove itself forms the antenna body.
- the tuning frequency is not shifted by the band size, and a high antenna gain can be maintained.
- the antenna body functions as a slot antenna, and when worn on the arm, exhibits a function as a circumferential slot antenna. Therefore, it has omnidirectionality and is suitable for portable use.
- band fasteners are a component of the antenna body.
- the antenna gain is stable without change.
- the space inside the case can be saved, and the case body can be made thinner.
- the tuning frequency can be adjusted without changing the structure of the antenna body.
- the feed point is set at a position shifted to one end from the center position in the length direction of the conductor plate and the impedance of the antenna body is adjusted, the configuration of other parts is changed It is possible to adjust the impedance between the antenna body and the radio circuit without any need.
- a dielectric is filled between the grooves of the conductor plate, or when an extended portion of the groove width to extend the circumferential length of the groove is formed, the same band length is maintained and a long wavelength is applied. Of electromagnetic waves. Conversely, for electromagnetic waves of the same wavelength, tuning is possible with a short antenna body, so that the antenna body can be downsized.
- the antenna gain is stabilized because the effect of the band fastener does not affect the tuning frequency.
Landscapes
- Details Of Aerials (AREA)
- Support Of Aerials (AREA)
- Transceivers (AREA)
- Electric Clocks (AREA)
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/081,380 US5465098A (en) | 1991-11-05 | 1992-07-01 | Antenna apparatus for transceiver |
EP92913997A EP0565725B1 (en) | 1991-11-05 | 1992-07-01 | Antenna device for radio apparatus |
JP5501172A JP2917521B2 (ja) | 1991-11-05 | 1992-07-01 | 無線機用アンテナ装置 |
KR1019930701731A KR930703716A (ko) | 1991-11-05 | 1992-07-01 | 무선기용 안테나 장치 |
DE69219581T DE69219581T2 (de) | 1991-11-05 | 1992-07-01 | Antenne für funkgerät |
HK98106288A HK1007216A1 (en) | 1991-11-05 | 1998-06-24 | Antenna device for radio apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28876391 | 1991-11-05 | ||
JP3/288763 | 1991-11-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993009576A1 true WO1993009576A1 (en) | 1993-05-13 |
Family
ID=17734398
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1992/000831 WO1993009576A1 (en) | 1991-11-05 | 1992-07-01 | Antenna device for radio apparatus |
Country Status (7)
Country | Link |
---|---|
US (1) | US5465098A (ja) |
EP (1) | EP0565725B1 (ja) |
KR (1) | KR930703716A (ja) |
DE (1) | DE69219581T2 (ja) |
HK (1) | HK1007216A1 (ja) |
TW (1) | TW200608B (ja) |
WO (1) | WO1993009576A1 (ja) |
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JPH08307129A (ja) * | 1995-05-10 | 1996-11-22 | Casio Comput Co Ltd | 携帯無線機器用アンテナおよび携帯無線機器 |
US5589840A (en) * | 1991-11-05 | 1996-12-31 | Seiko Epson Corporation | Wrist-type wireless instrument and antenna apparatus |
JP2007523558A (ja) * | 2004-02-19 | 2007-08-16 | イー・エム・ダヴリュー・アンテナ カンパニー リミテッド | 無線ハンドセットのインターナルアンテナ及びその設計方法 |
JP2008160830A (ja) * | 2006-12-18 | 2008-07-10 | Thomson Licensing | 平面アンテナの放射スロットの改良 |
JP2012118045A (ja) * | 2010-11-12 | 2012-06-21 | Seiko Epson Corp | アンテナ内蔵式電子時計 |
JP2012239144A (ja) * | 2011-05-13 | 2012-12-06 | Advanced Telecommunication Research Institute International | アンテナ |
JP2019521624A (ja) * | 2016-07-22 | 2019-07-25 | イギリス国The Secretary Of State For Defence In Her Britannic Majesty’S Government Of The Uneted Kingdom Of Great Britain And Northern Ireland | キャビティ付きアンテナ |
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US5757326A (en) * | 1993-03-29 | 1998-05-26 | Seiko Epson Corporation | Slot antenna device and wireless apparatus employing the antenna device |
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US5986566A (en) * | 1994-08-18 | 1999-11-16 | Oi Denki Co., Ltd. | Wrist band antenna |
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US5886669A (en) * | 1995-05-10 | 1999-03-23 | Casio Computer Co., Ltd. | Antenna for use with a portable radio apparatus |
JPH09307329A (ja) * | 1996-05-14 | 1997-11-28 | Casio Comput Co Ltd | アンテナ及びその製造方法並びにアンテナを備えた電 子機器又は電子時計 |
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US6972692B2 (en) * | 2003-04-25 | 2005-12-06 | Motorola, Inc. | Method and device for increasing effective radiated power from a subscriber device |
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US7162217B2 (en) * | 2004-07-02 | 2007-01-09 | Eta Sa Manufacture Horlogère Suisse | Interconnection circuit between two loop antennas embedded in a wristband of a wrist-carried wireless instrument |
US7038634B2 (en) * | 2004-07-02 | 2006-05-02 | Eta Sa Manufacture Horlogère Suisse | Optimization of a loop antenna geometry embedded in a wristband portion of a watch |
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US8350695B2 (en) | 2010-06-24 | 2013-01-08 | Lojack Operating Company, Lp | Body coupled antenna system and personal locator unit utilizing same |
US9070969B2 (en) | 2010-07-06 | 2015-06-30 | Apple Inc. | Tunable antenna systems |
US9166279B2 (en) | 2011-03-07 | 2015-10-20 | Apple Inc. | Tunable antenna system with receiver diversity |
US9246221B2 (en) | 2011-03-07 | 2016-01-26 | Apple Inc. | Tunable loop antennas |
US9350069B2 (en) | 2012-01-04 | 2016-05-24 | Apple Inc. | Antenna with switchable inductor low-band tuning |
US9190712B2 (en) | 2012-02-03 | 2015-11-17 | Apple Inc. | Tunable antenna system |
JP6179123B2 (ja) | 2013-02-21 | 2017-08-16 | セイコーエプソン株式会社 | アンテナ内蔵式電子時計 |
TWI511367B (zh) * | 2013-04-29 | 2015-12-01 | Acer Inc | 穿戴式裝置 |
JP6331430B2 (ja) * | 2014-01-31 | 2018-05-30 | セイコーエプソン株式会社 | 電子時計 |
GB201407240D0 (en) * | 2014-04-24 | 2014-06-11 | Hunter David | Monitoring system |
TWM507000U (zh) * | 2015-06-10 | 2015-08-11 | 廣達電腦股份有限公司 | 穿戴式電子裝置 |
CN106130197A (zh) * | 2016-08-31 | 2016-11-16 | 矽力杰半导体技术(杭州)有限公司 | 电能接收天线和应用其的可穿戴电子设备 |
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- 1992-07-01 US US08/081,380 patent/US5465098A/en not_active Expired - Lifetime
- 1992-07-01 DE DE69219581T patent/DE69219581T2/de not_active Expired - Lifetime
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5589840A (en) * | 1991-11-05 | 1996-12-31 | Seiko Epson Corporation | Wrist-type wireless instrument and antenna apparatus |
JPH08307129A (ja) * | 1995-05-10 | 1996-11-22 | Casio Comput Co Ltd | 携帯無線機器用アンテナおよび携帯無線機器 |
JP2007523558A (ja) * | 2004-02-19 | 2007-08-16 | イー・エム・ダヴリュー・アンテナ カンパニー リミテッド | 無線ハンドセットのインターナルアンテナ及びその設計方法 |
JP2008160830A (ja) * | 2006-12-18 | 2008-07-10 | Thomson Licensing | 平面アンテナの放射スロットの改良 |
JP2012118045A (ja) * | 2010-11-12 | 2012-06-21 | Seiko Epson Corp | アンテナ内蔵式電子時計 |
JP2012239144A (ja) * | 2011-05-13 | 2012-12-06 | Advanced Telecommunication Research Institute International | アンテナ |
JP2019521624A (ja) * | 2016-07-22 | 2019-07-25 | イギリス国The Secretary Of State For Defence In Her Britannic Majesty’S Government Of The Uneted Kingdom Of Great Britain And Northern Ireland | キャビティ付きアンテナ |
JP7051808B2 (ja) | 2016-07-22 | 2022-04-11 | イギリス国 | キャビティ付きアンテナ |
Also Published As
Publication number | Publication date |
---|---|
DE69219581D1 (de) | 1997-06-12 |
KR930703716A (ko) | 1993-11-30 |
DE69219581T2 (de) | 1997-09-11 |
EP0565725A4 (ja) | 1994-01-19 |
HK1007216A1 (en) | 1999-04-01 |
EP0565725A1 (en) | 1993-10-20 |
US5465098A (en) | 1995-11-07 |
EP0565725B1 (en) | 1997-05-07 |
TW200608B (ja) | 1993-02-21 |
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